Fig.4. Digital image protection and self-recovery

X axis:-Tampering percentage

Y axis:-PSNR in recovered area
CONCLUSION

The Huffman code compression algorithm is used to source code the actual image. An 8×8 pixel in an image is splitted into Most Significant Bit (MSB) and Least Significant Bit (LSB). Further, a modified watermarking scheme is used to protect the original image from damaging/tampering. Then the LSB bits are divided into source encoder bits, check bits and channel encoder bits. This modified scheme uses the check bits present in the LSB bits to locate the tampered zone and the PN sequence channel coded bits are used to recover the image in that tampered area.

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